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Tallinn, the capital of Estonia, sits on the southern shore of the Gulf of Finland on the Baltic Sea, on a low coastal plain at approximately 59.44°N, 24.75°E. Its far-northern, coastal position gives it a humid continental climate (Köppen Dfb) moderated by the Baltic — with mild, short summers and long, cold, snowy winters — and an extreme swing in daylight through the year.
Summer, from June to August, is mild and short, with July the warmest month — average highs around 21–22°C and cool nights. Genuinely hot days are rare, though warm spells can occasionally reach 30°C. It is the wettest season for showers and thunderstorms, but also by far the brightest, with near-endless northern daylight in June, when the sun barely sets and twilight lingers all night.
Winter, from December to March, is long, cold and snowy, with January and February the coldest — average highs around -2°C and lows near -7°C, and cold snaps driven by Arctic or continental air that can plunge below -20°C. Snow covers the ground for months and the Gulf of Finland can freeze near the coast, while daylight shrinks to only about six hours around the solstice.
Tallinn receives around 650–700 mm of precipitation a year, spread through the year with a late-summer and autumn maximum, while spring is the driest season; a substantial share of the cold-season total falls as snow, which accumulates and lies through the long winter. Live rainfall, humidity, and pressure readings for the city are shown in the panels above.
Tallinn's weather is defined by its far-northern latitude and the Baltic Sea, which moderates its winters relative to the continental interior but leaves them long, dark and snowy. The extraordinary swing in daylight — from the white nights of midsummer, when it barely gets dark, to the brief grey afternoons of December — shapes life in the city as much as the temperature does.
To follow any single measurement in Tallinn more closely, use our live instruments: the online barometer for atmospheric pressure, the thermometer for temperature, the hygrometer for humidity, the anemometer for wind speed, the wind vane for wind direction, and the rain gauge for rainfall.